PHANEROGAMS AND FERNS OF SOUTH ARDGOIL. 27 
up to 1700 feet. It is only in the autumn, at the flowering 
and fruiting period, that the widespread prevalence of this 
grass becomes strikingly noticeable, especially among the 
heather. The form pumila is common on dry terrace 
edges. 
Tufted Hair-grass (Aira cespitosa, Linn.)—Common at low 
levels, and again common above 1000 up to 2000 feet. Where 
one might expect A. alpina from the vegetative form, an 
examination of the flowers always indicates A. cespitosa. 
Wavy Hair-grass (Azra jflewuosa, Linn.)—Rather uncommon 
at low levels, but prevalent on dry banks and on peaty ground 
from 1000 up to 1750 feet. 
Early Hair-grass (Aira precox, Linn.)—This elusive little 
grass is probably fairly common. It has been observed at 
several spots at a few hundred feet in dry places with a thin 
coating of earth over rocks, and is most easily detected in 
autumn when the grass is bleached white. 
Downy Oat (Avena pubescens, Huds.)—At Eas Garbh only. 
False Oat (Arrhenatherum avenaceum, Beauv.)—An occasional 
grass by the shore banks, by roadsides, and the sides of streams 
up to 500 feet. 
Yorkshire-fog (Holcus lanatus, Linn.)—One of the commonest 
grasses at low levels; with Agrostis is dominant in field vege- 
tation. It is frequently found on the hills among rushes up 
to 1000 feet, and occasionally in other places, but not much 
above 500 feet. 
Soft Grass (Holcus mollis, Linn.)—Common in shady places 
up to about 800 feet, and especially so on the wooded banks 
of the streams. 
Mat Grass (Wardus stricta, Linn.)—Absent from the shore, 
the fields, and the roadsides, but begins to appear at a low 
elevation ; at about 800 feet it becomes a dominant over some 
considerable areas, especially on the north-west slopes of Cnoc 
Coinnich, and remains so up to about 1600 feet, thence gradu- 
ally diminishes to 1750 feet, 
Couch Grass (Agropyrum repens, Beauv.)— On shore side 
only. 
Rye Grass (Lolium perenne, Linn.)—At low levels only. 
False Brome (Brachypodium sylvaticum, Beauv.) —In Allt 
Lounin at 50 feet, at Eas Garbh strongly developed at 500 
feet, and near the shore among bracken in Corran Bay. 
Sheep’s Fescue-grass (Festuca ovina, Linn.)—Common; the 
